“Cavendish had been the author of The Black Arts in 1967, a book which I still rate as one of the best general introductions to Western occultism.”

OMG, they had this book in our high school library and for some unknown reason I checked out and read it, interesting experience for a 15 year old! It was comprehensive and had excerpts from grimoires from Middle Ages on how to summon sprits. It had a strange green-black cover (https://www.chegg.com/textbooks/the-black-arts-40th-edition-...).

Haven’t thought about it in nearly 40 years and I see it on HN! Chance? I think not.